Home / 42,688.42-58,781.09-38,684.39

Finding the Fourth Proportional to 42,688.42, 58,781.09 and 38,684.39

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Solution

The fourth proportional to 42,688.42, 58,781.09 and 38,684.39 is: 53,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,688.42 : 58,781.09 = 38,684.39 : x
  2. Step 2: Convert to fraction form
    42,688.42/58,781.09 = 38,684.39/x
  3. Step 3: Cross multiply
    42,688.42x = 58,781.09 × 38,684.39
  4. Step 4: Simplify right side
    42,688.42x = 2,273,910,412.99
  5. Step 5: Solve for x
    x = 2,273,910,412.99/42,688.42
  6. Step 6: Final answer
    x = 53,267.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.